How do people process numerosity? Do they rely on general magnitude processing (e.g. area, density etc.)? Or do they depend on a designated module underlying numerosity judgements? A recent paper by Cicchini and colleagues (Cicchini, Anobile & Burr, 2016) show results that strongly support the latter. They demonstrated that humans automatically perceive and spontaneously use numerosity, rather than other physical magnitudes (area of convex hull or density), when asked to make a judgment in an “odd-one-out” task. Here we present an alternative account for their findings. We suggest that saliency of the different attributes of the stimuli (i.e. numerosity, area of convex hull and density) can bias participant’s strategy. Using Cicchini et al's published data and an experiment we conducted, we show that indeed in their study, numerosity was more salient than the other stimuli dimensions. This casts doubt on Cicchini et al.’s conclusion that numerosity is processed automatically.